vestibulum


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vestibule

 [ves´tĭ-būl]
a space or cavity at the entrance to another structure. adj., adj vestib´ular.
vestibule of aorta a small space within the left ventricle at the root of the aorta.
vestibule of ear an oval cavity in the middle of the bony labyrinth.
vestibule of mouth the portion of the oral cavity bounded on one side by teeth and gingivae (or the residual alveolar ridges) and on the other by the lips (labial vestibule) and cheeks (buccal vestibule).
nasal vestibule (vestibule of nose) the anterior part of the nasal cavity; it is lined with stratified squamous epithelium and contains hairs (vibrissae) and sebaceous glands.
vestibule of vagina the space between the labia minora into which the urethra and vagina open.

ves·ti·bule

(ves'ti-byūl), [TA]
1. A small cavity or a space at the entrance of a canal.
2. Specifically, the central, somewhat ovoid, cavity of the osseous labyrinth communicating with the semicircular canals posteriorly and the cochlea anteriorly.
Synonym(s): vestibulum [TA]
[L. vestibulum]

vestibulum

/ves·ti·bu·lum/ (ves-tib´u-lum) pl. vesti´bula   [L.] vestibule.

ves·ti·bule

(ves'ti-byūl) [TA]
1. A small cavity or a space at the entrance of a canal.
2. Specifically, the central, somewhat ovoid, cavity of the osseous labyrinth communicating with the semicircular canals posteriorly and the cochlea anteriorly.
Synonym(s): vestibulum.
[L. vestibulum]

vestibulum

pl. vestibula [L.] vestibule.
References in periodicals archive ?
The vestibulum increases in volume in the series studied.
2007) for diprotodontians is the caudal view of the posterior arc of the LSC just before the 'contact' with the vestibulum, which exhibits a curvature in the case of the arboreal species.
Hyrtl (1845) investigated the number of openings at the vestibulum that lead to the semicircular canals.
I propose the following putative synapomorphies for Carvalhomiris: large genital capsule with cephalic, lateral margin strongly emarginate; strong brachypterism in both sexes; fight paramere clubbed, with apical margin serrate; vesica with a single, large, C-shaped spicule, with its base nearly reaching the cephalic end of the aedeagus; lateral infoldings of the sclerotized tings on the dorsal labiate plate with a posteriad acute process; and dorsal labiate plate with a cuplike depression projecting into the vestibulum.
Females distinguished from those of Hamatophylus guttulosus (Reuter, 1876) by the smaller size and more slender body shape as well as characters of the female genitalia, such as the straight and membranous vestibulum (Fig.
10): Dorsal labiate plate of bursa copulatrix broad and rather short, sclerotized rings small or medium-sized, set far apart from each other, vestibulum membranous, posterior margin of fold within bursa copulatrix weakly sclerotized, valvifers 1 weakly sclerotized, posterior wall membranous with roughly symmetrical, paired, elongate oval sclerites.
10): with bursa copulatrix short and broad, sclerotized rings large, rounded, and set far apart from each other, vestibulum sclerotized, elongate, and almost straight, valvifers 1 well-developed, posterior wall membranous with roughly symmetrical paired elongate sclerites.
11): Posterior wall a simple sclerotized plate: sclerotized rings moderately infolded laterally with the lateral portion of the underlying dorsal labiate plate triangular plate: vestibulum relatively short and simple.